-6.8% is the change from 559 to 521
Calculation steps:
[( 521 - 559 ) ÷ 559] x 100 = -6.8%
Formula
Percentage change = [(521 - 559) / 559] x 100
Subtract the new number by the original number
521 - 559 = -38
-38 ÷ 559 = -0.06797853309481217
-0.06797853309481217 x 100 = -6.8%